After doing a bios update, the computer will not start. Removed battery, unplugged, then hooked back up, pressed power, fan comes on, cd rom drive flashes, but nothing more. No display.

The BIOS information is typically found at or near the top of the POST screen for a very short time ALR PC non / PCI = CTRL+ALT+ESC AMD advanced micro devices=BIOS = DEL Award BIOS = DEL Dtk Datatech Enterprises Co. BIOS = ESC Phoenix BIOS = CTRL+ALT+S Phoenix BIOS = CTRL+ALT+INS Restart your computer during the boot process you will see on the screen to press a certain key usually Delete or F2 to enter setup
this will differ depending on which bios you have Press and hold that key during the boot up process to enter BIOS Restart your computer During the boot process you will see on the screen to press a certain key to enter setup usually the Delete or the F2 key Press and hold that key during the boot up process to enter BIOS the using arrow key scroll down to advanced bios features press enter change your first boot device to cd,press escape then press f10 to save to cmos to restart note this will erase you operating system you will have to have an operating system disk to load it onto you hard drive or create a partition to load another operating system (note after you have loaded the operating system you should go back and change the first boot device to your failsafe or optimized defaults) after windows has loaded your computer will automatically restart it might restart 2 times one to finish the installation the next will be because the operating system is loaded and will boot from your cd during the boot process you will see on the screen to press a certain key to enter setup Press and hold that key during the boot up process to enter BIOS using the arrow keys load failsafe defaults or load optimized defaults press escape then press f10 to save to cmos to restart otherwise it will keep booting from the cd /dvd drive

If the cd rom is not being detected ?

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 type regedit 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 computer
Open 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.

first your cd dvd drives
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 restart your computer then plug them back this should activate the found new hardware wizard

if this does not fix the problem it might be a registry problem if you cant see your disk drive in windows explorer
Close all open programs

Click on Start, Run, and type regedit 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 computer
Open 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.

then you should be able to load xp
hope it helps

It would seem that your BIOS has become corrupted somehow. First try entering your BIOS setup. I believe for HP computers when you press power tap the F10 key until it opens. There you can try to reset them in some fashion and save. Try rebooting. If that fails then remove the battery and repeatedly press the power button for about 10 seconds.. (make sure it is also unplugged, this is to discharge the power from the system) then replace the battery and try booting again. Otherwise it would seem that you might have tried to load the wrong BIOS into your laptop. Check with HP then if you are still covered or not. :/

1. First of all, you need to shut off your computer . To do this press the power button on the front of the computer after you have shut it down from Start> Shutdown on your start menu.

2. Unplug the power cord from your computer. This is the big black/white/grey plug that plugs into the power supply on the back of your PC.

3. Unplug the rest of the wires from the back of the computer.

4. Find a sturdy flat surface on which to work on.

5. Unscrew all screws from the back of your computer except the power supply screws. You will make a mess if you unscrew the power supply screws.

6. Open your computer up by taking the side panel off, or sliding the cover off. It might be difficult but it will come off if you have taken all the screws out.

5. Now before touching anything inside, it is a good idea to hook up to an anti-static wrist strap. If you dont have an anti-static wrist strap, just touch the side of the computer where it is metal to deshock yourself. Then when you touch the inner components you wont risk damaging any of them.

7. Find the CD-Rom drive, it should be about 1.5 inch thick 5 inches wide, and 6 inches long. Unplug all plugs from the back of the cd-rom drive, there should be an IDE (wide) plug, a cd plug (small) and a power plug (medium).

8. Once you find the CD-Rom drive, find the screws holding it onto the chassis. unscrew those screws on both sides of the Cd-rom drive. Be careful not to unscrew any screws holding the cd-rom drive together.

9. Now, you just have to remove the cd-rom drive, carefully by sliding it either forward or backward. Check the jumpers on your new cd-rom before moving to the next step. A typical cd-rom drive should be set on slave if it is using the same IDE cable on the same cable.


10. Now that you've removed the cd-rom drive the next step is to install your new CD-rom drive. To do this, simply slide the cd-rom drive in from the front of the computer, controls facing forward. Plug all the plugs back into the cd-rom and screw everything back into place.

You didn't mention if you get any VIDEOs, I assume you DO... If not, check if you can get VIDEO OUT to a regular computer monitor... Now lets talk about your computer not being able to boot up where as it either shuts down or do nothing...

What I would recommend you do is REPLACE the THERMAL PASTE between the HEATSINK and CPU... Most of the time, if the paste is hard, it will not obsorb the heat well and causes the laptop to over heat and shut down or crash and do nothing.

I agree...sounds like a power supply problem. Typically a bad power supply will not damage the motherboard. It should still be functional.

This sounds like a hard drive failure. If you know how to get at the drive, with the battery and the power supply removed, remove the hard drive and plug it back in. Do this 2 or 3 times. This is called reseating and cleans the contacts. If you continue to get the same message, your hard drive is bad.

You got some short on board, You need techguy. Or possible Bios flash, Remove the Harddisk and press the power button.
If nothing change, Remove power, battery, cd rom, Hdd, memory.

Then put one stick of memory, power up, see anything comes up.If does, power off, put the other memory plug in power, fire up.
If does ok. Then plug off, and put hdd without CD rom. see if it did work.

If none is worked as I say you have short or CPU fan is not functioning.
Goodluck.
JMC

Check you'r jumpers ei master slave. and all cables are hooked up right, power hook up are fully in. you may have to up date win xp. sp 2-3 so on. enter cotroll panel. system. hardware tab. device manager. look under dvd/cd-rom drivers if they are listed there 1st try to update the drivers. if that don't work then uninstall all of the dvd/cd roms listed there. then restart you'r computer. on the re start win xp install wis. shold find the roms and install them and update them. if that don't work you'll have to call the microsoft free help line. this is what they had me do when I had the same problem. you may in the end have to wipe and re install window, sorry to say. hope this helps you

You can start from checking its general status (it is not clear from your description of the problem).
The first you can check if the drive is visible to the system
With WinXP it is in menu Start\Control Panel\System\Hardware\"DVD/CD-ROM drives" like in this picture, for example:

With Vista it is in menu Start\Control Panel\System\Device Manager\"DVD/CD-ROM drives". If you see it - click on it and check its status: "This device is working properly" or not.

If it is in the system, it should be visible in MyComputer as a disk drive as well. If yes (and still not working) then try another known-good drive to hook up to your computer and if it works - there is most likely a problem with your drive on hardware level -your drive need to replace it. If the known-good one does not work either - something is wrong on the motherboard or power supply (check power supply by pressing CDROM eject button - it's supposed to get open/closed if it is powered). For complete clarification you can check your CD-ROM with a known-good computer.

If system does not see it - you'll need to check its wire connections (switch off the power and unplug the computer case power cable before opening the computer) - there should be power (coming from power supply) and data cables (usually coming from motherboard) hooked up. The drive can be either IDE or SATA type - check wikipedia.org to see how the cables look like.

If the both cables are connected, you can check BIOS: in the beginning of booting you'll need to press an indicated button to enter Setup (usually it is either "Delete" or "F2" buttons). In BIOS you'll need to check setup related to CD-ROM or/and IDE if anything funny is there (they should be OK by default).

That's practically all what you can do about it. You do not need any special software for accessing data files as photos or docs - the disk should be visible in MyComputer just as any other data disk. For video and DVD - MS Windows Media Player is fine.

I hope it'll help.