20 Most Recent Compaq Presario Sempron 2.0GHz Desktop (Refurbished EXCLUSIVE) (EL426AAR) PC Notebook Questions & Answers

Sounds like a hard drive problem. Try and boot from a windows instalation cd and select repair windows. If this do not work and you have very important info on your hard drive i would take it to be serviced and data saved. If it is not important data on the hard drive reinstall a fresh copy of windows.Good Luck

In case somebody has the same problem. Result of my investigation: * If everything is ok then the Presario CQ61 boots without battery. * HP support recommends to do a hard reset i.e. remove power supply, remove battery, press power button to discharge everything internally, connect power, press power button In my case the problem was solved by changing the AC Adapter (Power supply). Note: The led besides the power connector is not reliable. It is on with the working and faulty adapter. Note: The voltage level at the battery pins is not reliable. I had same values.

old PC,, Cq series. cq62-nnnnn you left off the nnnnnn cq62-100, 200 ,300 what? running mS windows 8 HP does not support W8 on this PC so that means you are on your own steam... (you , it and microsoft 100%) forget ACER this is not and ACER PC< at all, (totally different) you could reload w8 , like you did before, now all that works its login password issue, can i presume the screens look ok W8login screens? local login fails, not bios, and not windows live logins fails that is right there are 3 tiers of logins. admin , create a new account and use that or do that and ask at MS how to copy date from dead account to new account, you never said once you had data. if no data on pc, then reload 8, easy no? the newer the OS the more hard it is to get data from that dead account( new permission rules, and hard to do) ask best i can tell, lacking your full model number teh CQ62-400 (newest) had only Windows 7 so how did w8 get there, from whome, and what media. and what install methods. from MS CD? or MS ISO, or from ebay hackers disks/ what? here are the ways, (not data recovery) http://www.pcdied.com/passwords.html

how'd you do 2012 post then 2017, shocking. some one needs new clock battery , LOL

check o see if your sound driver is compatible with new software operating system.

Find your model number near the serial number. With that number go to the following link and enter it. This link is for HP's support website. You can find everything about your PC, replacement parts, Drivers, Manual. HP Troubleshooting

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Oh dear you have broken this and will need to send it off to be fixed.

Won't load in safe mode?? What's your operating system? Has the hard drive been formatted?

1. Turn off your computer. 2. Press the power button to turn your computer on. 3. Hit F11 a few times quickly, while the launch screen is still up. This will launch the Recovery Manager. (If you see the Windows 7 boot logo, you've missed your chance and need to restart your computer and try again from step 2.) 4. On the left side it will say "I need help immediately". Underneath that there will be an option that says "System Recovery". Click on that. 5. There will be an option to either back up your files before restoring, or to recover without backing up your files. In my case, I'm recovering without backing up my files. 6. It will tell you to make sure all devices are disconnected from your computer. Make sure they are, and then click "OK". 7. There will be a "Welcome to the Recovery Manager" screen. Click "Next". 8. It will begin to reformat your partition and to reinstall the Windows 7 setup files. Once it's done doing that, click "Next". You'll be brought to a page saying "Recovery is Complete". After that all you need to do is reboot, and it will bring you through the wizard to set up Windows 7, just like on a new computer! Good luck :)

THIS IS NOT A PROBLEM THAT NEEDS to be asked on here as there are so many stolen laptops about ,ull need to go to a repair shop with proof of purchase or something that is on your system that only yourself could identify , to regain access to your laptop..

Try to reinstall windows formatting your Hard Drive... It seems to be an windows crash, or some software.

Drive is formatted with wrong file system. The files you're trying to copy are too big

I'm sorry, are you certain that your power supply is working? If it is, these laptops are notorious for having power port issues. Your power port module may have loosened from the circuit board, inside the casing where you can't see it. Does your power plug wiggle around a lot after you insert it? If so, you may have to take it to someone who can resolder your port back on the board, or replace it altogether.

Which operating system ? Click start control panel administration tools computer management device manager scroll down cd-dvd rom drives you might see a yellow question /exclamation mark ? ! or a red X right click to update driver You might have to physically unplug the leads for this cd/dvd computer then plug them back in restart your this should activate the found new hardware wizard. If this does not fix the problem it might be a registry problem "you only need to do the following" if you cant see your disk drive in windows explorer Close all open programs Click on Start, Run, and typeregedit and press Enter Click on the plus signs (+) next to the following folders HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Control Class {4D36E965-E325-11CE-BFC1-08002BE10318} This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column. Upper Filters Lower Filters Upper Filters.bak Lower Filters.bak If any of the above keys shown in step 4 are listed, right-click on them and choose Delete After deleting the keys, close the registry editor Reboot your computerOpen My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone. if this fails to fix the problem It could be a problem with the lens you could use a liquid type lens cleaner place 2-3 drops on top of a cd/dvd then run it http://www.nextag.com/dvd-lens-cleaner/shop-html http://www.infopackets.com/news/hardware/2005/20050315_clean_cd_or_dvd_rom_lens_with_a_brush_part_2.htm