The CPU or RAM maybe faulty.
Computer does not boot up
The problem maybe the RAM, it could be faulty or just needs
reseating to make proper electrical contact.
Reseat the RAM and then boot up your laptop. If it still does not boot up then
remove the RAM module/s and take them to your friendly computer repair shop and
get them to test the RAM for you.
Just like you sometimes need a mechanic to repair your car, sometimes
you do need a technician to diagnose and identify the fault or faults on your
computer. Not only does a good service technican have the experience to deal
with this type of problem, they also have the equipment that allows them to
look at things the average computer user can't see, and he has a collection of
replacement parts that can be used to quickly test individual components on
your computer.
SOURCE: HP nc8230 no BIOS setup and system time error
the simple thing is that are the both system compartible?so if they are not just compartible go to the local pc outlet in your area and get a compartible one better you go with the faulty screen so it could be easily verify.
SOURCE: opened laptop to find '
Please make sure if you open the back part of the laptop check the Harddrive if it is firmly connected. bacause it is possible that the reason why the laptop doesn't detect it is because of the physical connection.
SOURCE: My son has an HP
I think you can see the black screen or the Bios screen even if you don't see anything further, or nothing at all? Cursor is another case, but once it tries to boot up, it should show something on the screen, like black screen with white text or something similar. If so, then I would suspect Windows Boot issue or some boot files might have been corrupted or damaged or deleted or missing.
I appreciate that you've already done the basics like reseating Hard disk and Ram. Now, you'll need a windows CD or a Recovery/repair disk, (since you didn't mention the O.S. name, i can't verify which Windows Recovery/Repair disk you should use, if it's windows vista, you have to use a Windows vista Recovery/Repair Disk). But here's another problem, since HP don't provide the Recovery disk (they only instruct to Order the Disk on Hp Official Website), you have to get one for yourself. Before you look for one, you have another option.
Once you press the power button to power up the Machine, keep tapping the F11 on the keyboard and wait, if you see anything on the screen, you have a chance (but not all problems) if you can proceed with the onscreen instructions and Restore the system to Earlier State, then proceed ahead and try with the System Restore Wizard.
You can also try with the Safe Mode, press the power button the Power-on the laptop and keep press F8 button on the keyboard, it'll direct you to the "Advanced Boot Options", if this is possible, then select "Safe Mode" from the options available (use the arrow keys and press enter to confirm and proceed). It'll show several white texts with black screen and will boot up after few minutes, if any message pops up to confirm your input, click "yes" or "Ok". Once it's successfully booted, uninstall some softwares or applications or drivers etc.. you had recently installed, again reboot the system into Normal mode, if Safe Mode is not possible, your last option (from your end) is to boot from a Windows CD and check if it can go well. These are all what you can do from your end, if these fail, you better call a tech or hp or take it to a local service center.
If you need further help, let me know.
Good luck.
Thanks for using FixYa.
SOURCE: Toshiba l355d - s7815 won't boot and screen doesn't light up
From your description you have a motherboard issue, the only way to rectify this, it must be replaced.
SOURCE: I have a gateway ms2285 and it was working fine i
If your laptop appears to boot up and the hard disk LEDflashes, then the problem is probably a back light fault. This can be a faultyinverter or a faulty CCFL lamp. Please click on this link and follow myinstructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen
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