Question about HP Media Center PC 873n (P9875A#ABA) PC Desktop

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Online computer TV boots my system

The online computer TV was working until I downloaded windows updates and rebooted the system back up. I brought media center TV up, clicked and poof! fade to black..."system recovering from error." I tried it again and same thing (5x)...advise please...

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Try a Windows system restore. Go to the start menu then to the help and support center, from there click on "restore my pc to an earlier date" windows update automatically creates backups before it installs so there shouldbe one just before your last update.

Posted on Mar 05, 2009

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Why my hp desktop keep turning off error c000021a

this is how to fix your desk top with xp,if you have another os,this may also work,but,be prepared,you may need to reinstall your os,if this works,then immediately download this and run it, SpeedyPC Pro Download ,and then d/l this and buy it to keep your pc running great, , Things You'll Need
  • Windows XP installation CD
  1. Last Known Good Configuration
    • 1Restart your HP computer after the blue screen shuts it down.
    • 2 Repeatedly tap "F8" when the HP logo screen appears during bootup. This will load a menu with various boot options to select.
    • 3 Use the arrow keys to select "Last Known Good Configuration" and press "Enter." The system will roll back recent changes and may fix the problem. Continue to the next step if the computer does not successfully boot.
    In Place Upgrade
    • 4 Insert the Windows XP installation CD into your HP computer's disc drive.
    • 5 Restart the computer.
    • 6 Press any key on your keyboard when you see "Press any key to boot from CD..." This will launch the Windows Setup program.
    • 7 Press "Enter" to begin the installation process.
    • 8 Press "F8" to agree to the Windows XP licensing agreement.
    • 9 Highlight your current installation of Windows XP and press "R" to perform a repair installation.
    • 10 Follow the onscreen instructions to complete the repair installation. Your personal data and applications will remain intact, but all Windows updates and service packs will be removed during this process.
Tips & Warnings
  • Back up your data before running a repair installation on your HP computer.
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May 21, 2014 | HP PC Desktops


How to Maintain your Computer: Big Cleanup (Windows)

In my previous tip, I gave you my schedule for computer maintenance. Hopefully it'll serve you as well as it's served me. However, I didn't get to mention the big cleanup that I do. This one is the most involved, and will take a long time to explain, so settle in. Be sure to read this ENTIRE tip before attempting it, as it involves several things that can be devastating to your computer if done improperly. You have been warned.

Yearly or Bi-Yearly cleaning:

You'll need: That external drive again, make/model of your computer, recovery disk (if applicable) or recovery partition (if applicable) or operating system disk.

This cleanup is the biggest, but it's also the most important and the most dangerous. It involves restoring your computer back to factory settings. This means that you lose EVERYTHING on your computer, which is why I mentioned backups in my last tip. Depending on your materials, this is done different ways, but it all starts out the same.
I suggest doing this every year, but it's a tedious process so it's understandable if you do it every other year, but I wouldn't put it off too much longer than that.

The first thing to do is to make another image of your harddrive (Tip located here). This will serve as your backup in case anything goes wrong. Next, look through your programs again and make sure you have the installers/product keys/cd's for ALL of the ones that are still installed (by this point, you should have weeded out or kept backups of the rest of the installers). If you miss something, that's ok, you can always get it again later. If you can't find a product key for something you might have an issue. You may need to find the receipt to request a new one.

Next, make sure ALL of your data is backed up. Put everything on the external drive. The more you put, the easier it is to get it off again. I suggest (in addition to the image) to download the system rescue cd and copy your entire C drive to the external drive. I'll make a tip for that as well.

Now, go online and visit your computer manufacturer's website.,,, etc. Search around on the site for the support and downloads section (it's different on every site, so I can't even give you general guidelines. It'll be visible there though, with some searching you can find it). When you find the Driver Download page, you'll have to put in your model number and operating system. Download all of the drivers and put them on your external drive (or better yet, on a USB stick or a CD). You might need them later, and you might not be able to get online to get them, so it's good to have them.

Finally, before we format/reinstall, MAKE SURE ALL YOUR DATA IS BACKED UP!!! When I say format, I mean gone. Forever. Double check. Triple check. There have been too many times when horrible things have happened for me to say check once and be done with it.

Now here's where our paths diverge. Depending on whether you have a rescue cd, a rescue partition, or an operating system CD.

Rescue CD: Usually comes with the computer when you purchase it. Open the disk drive and put the CD in, then reboot your computer. It should boot to the CD drive automatically. If it goes into Windows again, just restart again and try hitting buttons at the BIOS screen until you get the boot menu (usually it's Esc, Del, F7, F2, or F1, but it'll say on the bios screen as it's booting). This will boot the recovery CD. Then, follow the prompts to restore the computer to factory settings. Do not repair it, restore it.

Rescue Partition: This is becoming more and more common. To get to the rescue partition, press F8 when booting over and over. Typically you'll have to hit it AFTER the BIOS screen, but BEFORE windows starts to load. You'll get the windows boot menu, and there should be a Recovery or Rescue or Restore entry in there (NOT safe mode). Boot to that, then follow the prompts to restore the computer to factory settings.

Operating System Disk: This is the hardest, but it will be the most rewarding. Make sure you have the product key for the operating system, then boot to the CD just like was explained in the rescue cd section. It will boot to the windows installer. Follow the prompts just like before, but when you get to the screen where it asks which partition you want to install it to, DELETE ALL THE PARTITIONS, then SELECT THE FREE SPACE! This will give you the cleanest installation possible, but you'll also be missing all your drivers. Then, follow the prompts to install Windows. When asked, input the product key and the rest of the information.

Now everyone should be into Windows. For the OS disk people, open up your driver folder (where you installed all the drivers for your system way back before the format) and install the drivers for the WIFI and LAN, so that you can get on the internet.

Next, run windows update. When it's done, you'll have to reboot. Run it again, then reboot. Run it AGAIN, then reboot. Run it until you have no updates left. OS disk people, if you're still missing drivers, install them from your folder and keep running windows update.

After you're all up-to-date, re-install your antivirus from the installer file you backed up. Update that, then reboot again.

Now you have a new, clean, shiny, empty windows installation to play around with. It's just like getting a new computer! Go back through your backups and replace all your data, re-install all your programs, and get everything back to the way you like it.

Then you're done! As you use the computer you'll find that you forgot to install a program, or you lost a license key, both of which can be remedied. But think, you just got a "completely new" computer. Yes, the hardware might be outdated a bit, but it'll run like a champ. Even if you have to buy a license key for Office at about 200 dollars, you're making out great.

If you follow this guide, you'll have a computer that lasts for ages. As I might have mentioned, my computer is nearing 8 years old. The hardware (namely the mouse) is failing, one of the USB ports doesn't work, but it'll run nearly every new game that I want it to. It'll play movies, get me online, do everything I want it to do. It's not new and shiny, it's scratched up, but I've made it last. If you follow the instructions, barring any strange incidents you can do this as well. Best of luck!!

on Aug 08, 2011 | PC Desktops

1 Answer

I purchased a windows password recovery online ran the program, burned the cd now what??

You need to change boot options in BIOS. Press required F key during boot. Look on the screen since they vary with systems. Find boot options and make optical drive (CD\DVD) 1st. Save and reboot. You should get "Press any key to boot from CD".

Note: Some systems have a boot option durig startup. Thus eliminating the need for BIOS change.

Sep 29, 2012 | E-Machines eMachines Desktop PC

1 Answer

I just paid Internet Explorer $169.00 yesterday (May2,2011 to fix my computer problems, but the problems are different and worse today. I want to speak to someone personally, please

Turn off your computer. Than go ahead and turn it back on while hitting the key "F8". Continue to do so until you see a screen appear with options like "Safe Mode". Use the arrow keys and press down until you have highlighted "Safe Mode with networking". Press enter and let the computer do its thing. Once down, login to the computer. If you are able to see the desktop again, go ahead and open your browser and download the following: Update the software and run a full scan. Once done, click remove and than finish. It will prompt you to reboot. Only do so if the other scan is finished Agree to the use of the scanner, let it update, and finally hit scan.
After both scans, your computer should be clean and you will be able to boot into your computer normally
If the above does not work, try the first step of hitting "F8" and select the windows repair. Please contact me with any questions.

May 03, 2011 | Compaq Presario sr1303wm Computer - AMD...

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Virus computer g spot has in my computer. i"ve to kill that virus with loka anti virus but i cann't. what i have to do ?


Your computer has a small piece of software that someone else has remotely installed, most likely the software installed itself. It's call a virus, malware, etc. To use a computer online surfing the internet or checking email this day and age, you must pay for and keep paying for a good quality security program or your computer will always have issues like this or similar. Follow the steps below. If these steps do not work and if you needed to ask this question to begin with, will need to take your computer to a computer technician for repair.

1) Backup all of your personal files and only your personal files. Do not backup anything else. You are trying to save your personal items from loss and hopefully whatever is on your computer does not reside within your personal items. If you do not have a external hard drive or flash drive, its time to get one. They are sold everywhere.

2) Go to the following link and install the ccleaner software:
It works great and its free!

3) Go to the following link and install Malwarebytes software:
Also great and free!

4) Go to the following link and install Auslogics software:
Again great and free!

5) Go to the following link and download but do not install Comodo Internet Security:
Free and include the anti-virus and firewall in one-

6) Search online and find out how to start your operating system in its non-networking safe mode.

7) Disconnect your connection to the internet; unplug the wire, turn off the wireless card, etc.

8) Restart your computer in safe mode.

9) Once in safe mode, do not start any programs and do not look around, do the following:

A-Run ccleaner. It has a computer cleaner and a registry cleaner. Run both cleaners repetitively until they stop finding anything to clean.

B-Run Malwarebytes. Do a full system scan. Delete and/or Quarantine anything it finds. Keep running the full system scans repetitively until it no longer finds anything. This could take a while.

C-Run Auslogics. Select all of your drive and click defrag. Keep running the defrag repetitively on all of the drives until it defrag's each drive in less than a few minutes; if after 5 or 6 time it still takes forever, your drives are just messed up; just continue. This also could take a while.

10) Restart you computer in regular mode. Do not start any programs or look around , do the following:

A-Install Comodo Internet Security. During the install process, restart the computer as need by Comodo.

B-Run a full system scan. Delete and/or Quarantine anything it finds. Keep running the full system scans repetitively until it no longer finds anything. This could take a while.

C-After the last scan, restart the computer.

11) Once in back in regular mode again, run each of the four programs you have just installed and run their update feature. Follow what it says to do except for running any scans.

12) Update your operating system. Search online if you do not know how. This is one of the most important steps of this process. Run the update repetitively until it stops finding anything to update; only update what needs to be updated. If you are not Chinese you do not need to update the Chinese language! Restart your system as the update ask as this is important to do so. After the last update cannot find anything to update, restart your computer.

13) Once in back in regular mode again, do not start any programs and do not look around, do the following (Yes, just do it all again. It will take less time this time around):

A-Run ccleaner. It has a computer cleaner and a registry cleaner. Run both cleaners repetitively until they stop finding anything to clean.

B-Run Malwarebytes. Do a full system scan. Delete and/or Quarantine anything it finds. Keep running the full system scans repetitively until it no longer finds anything. This could take a while.

C-Run Auslogics. Select all of your drive and click defrag. Keep running the defrag repetitively on all of the drives until it defrag's each drive in less than a few minutes; if after 5 or 6 time it still takes forever, your drives are just messed up; just continue. This also could take a while.

14) Restart the computer ahhhhhgain.

15) By know you should notice a difference.

Please rate this answer if it helps!


Feb 05, 2011 | PC Desktops

1 Answer

Machine won't start - so put diagnostic cd in and now cannot eject it. Sift key eject does not work - is there any other way of ejecting cd from Dell XPS One

You may not be able to eject CDs or DVDs from your computer, either using the Windows Eject feature or by pressing the button on the drive. If the Recommended Solution above does not automatically return your drive to a working state, try these options:
  1. Attempt to Eject the CD in System Setup. Software may be interfering with the normal operation of the drive. Reboot the computer and tap the F1 key while at the Dell logo screen to enter System Setup. Then attempt to eject the CD tray using the button on the drive. If the drive ejects properly, there is a software conflict that needs to be resolved.

  2. Try a Diagnostic Startup. If the drive ejects normally in System Setup, try a Diagnostic Startup of Windows 7.
    1. In Windows, click Start, then in the Search box type msconfig and hit .

    2. Click Diagnostic Startup to load basic devices and services only.

    3. Reboot the computer and try to eject the drive when you get back into Windows 7.

    If the drive ejects correctly, look for burning software that may be controlling the drive and update it or uninstall it.

  3. Reseat the drive. The cabling of the drive may be loose, or the drive may not be seated correctly in the laptop. Refer to the Online User's Guide for your computer for information on reseating the cables or the drive in the computer.

  4. Update the optical drive firmware and the BIOS on the computer. In some instances the firmware of the drive may become corrupted or the BIOS may 'lose' the drive. Visit the Dell Drivers and Downloads website and input your Service Tag to get updates specific to your computer.

Dec 07, 2010 | Dell XPS One All-in-One TV Desktop with...

1 Answer

Windows is not opening because of 'unauthorised changed in windows explorer' message is coming

You will need your Windows CD to do the following:
  1. Boot from your Windows CD (Change boot priority to boot from CD first in bios or use temporary boot options at startup - if your system supports it)
  2. When the Windows XP Professional/Home Setup screen appears, press R to enter Recovery Console
  3. At the prompt, type sfc /scannow and press Enter
  4. Once completed, continue with the steps below
Now make sure your system is free from viruses/malware by doing the following:
  1. Remove the Windows disk and restart computer into Safe-Mode with Networking (press F5 or F8 repeatedly whilst booting)
  2. Run an online virus scan here
  3. Download, install & update Malwarebytes
  4. Run a full scan & reboot if/when asked.
  5. Clean up your system by installing and running Ccleaner

Dec 01, 2010 | Microsoft PC Desktops

2 Answers

I brought my hp about 2 years ago it worked for about a month now im trying to fix it but when it comes on it goes to the screen where it asksstart windows normally how do i reboot

You can choose to start windows normally and it should bring you to regular desktop. If not to reboot you actually have to shut it off by holding down power button until it shuts off. If still issue try to boot in to safe mode by pressing F8key on boot up and keep on pressing it till advanced start up comes up. Once in safe mode try to run virus scan to see is there any viruses. Also in same menu there is safe mode with networking if you choose this one you can do updates since it will allow you to go online even that you are in safe mode. This might resolve the issue.Hope this helps.

Jan 16, 2010 | HP Compaq Presario SR2150NX PC Desktop

1 Answer

Internet freezes, restart does not start in normal mode

These desktops came woefully short on ram,so i would upgrade if i where you.
You seem to know what you are doing,so I'll just agree with you, and say Re-install fresh.
But remember not to have the internet cat5 cable hooked up until you have some kind of anti virus installed,,i personally use AVIR.
So download and copy to a CDRW so you can install before connecting to the internet.
P.S. i also use Zonealarm firewall software (in my opinion it is the best) Set your pc to boot from CD just hit F8 or F10 as it is booting up to get the boot order screen.
Then have the WinXp cd installed in the drive as its booting.
P.S. When you are updating windows,,do not allow Service pack three to install unless you have lots of Ram installed, because it will slow your PC down to a crawl.

Jan 29, 2009 | Dell Dimension 3000 PC Desktop

1 Answer

When I reboot my PC it is really slow rebooting and then I have to wait for another couple of minutes before I can log into windows


I guess that your pc is infected with potent antivirus, boot your computer in "safemode with network" and then scan you computer online. use this site:

if this not solve the problems you need to reformat and reinstall the windows operating system.

may this help, melnavz

pls do not rate me if my solution not solve the issue and you need more further information. but if is invaluable solution rate me fixya.

Apr 18, 2008 | PC Desktops

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