Installing r9250 I installed the card with the PC powered down. When powering up again PC fails to boot

Hmm. I wouldn't have thought it had anything to do with pressing the button. It sounds more like a failing power supply or lack of current for startup. Did you make sure you plugged the power into the video card power connector (if it has one)? I know it worked ok at first but a heavier load can cause older or under-rated power supplies to fail soon after. Just a thought.

Hello kcfromks13
Yes , it seems to be a PSU insufficiency . A new one will only cost you a little money , don' t hesitate buying at least a 400 W power unit . Indications about this should be found on the box of your video card .
Check first if the correct driver has been successfully installed .
Best regards
fanaudi .

Make sure there is power at the outlet, surge suppressor, power strip. Be sure any connected UPS is on. Try again.

Remove any recently installed hardware and go for boot. If the PC boots, check to make sure that the new hardware does not overload the old power supply - if it does, replace with a higher capacity power supply and go for boot.

Open the PC. Look for indication of power - LEDs, fan, etc. Replace the power cord between the outlet and computer if one is available, and go for boot.

If possible, obtain a power supply tester to determine if the power supply has failed. Replace any failed Power Supply and go for boot.

Disconnect power. Disconnect all non-required cables and accessories. Leave only the power and data cables for power supply, boot drive, video card, mouse, memory and keyboard connected - everything else should be removed (with the exception of the small cables that go to the MoBo headers for LEDs, and switches on the case). Everything means both data and power cables. All controller cards should be removed as well unless using on-board or built-in controllers. Reconnect power and try for Boot.

Add devices, cables, etc one at a time to determine which is causing the fault. A PC that boots and shuts down shortly after could be an indication of overheating / over load. Clean dirt & dust from case, ventilation slots, etc. Make sure all fans spin freely - replace any that do not.

Those are some things to start working on.. hopefully, you'll find the problem and not have to go further. Good luck!

i hate these computers my freind and would as soon as i could replace the motherboard to save yourself a lot of trubbl;e hope this helps

Best solution I can think of is Step by Step

Remove those items again and Step by Step, 1 by 1 install each item.

If each item installs ok one by one, then leave in one item at a time. Slow process yes, but you might find which item is causing the conflict.

If you install smething an the machine fails Remove it and the Item before it, then install the Item that failed and try it again.

If it fails then it could be the item not the PSU.

If it fails because of all the items... Then you may need to upgrade your PSU

Please refer to your manual & see if a small power cable needs to be plugged to the CARD for stability & better performance. Plug also ur VGA/DVI cable properly. See if all the 15pins are there!
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Try taking out all the newly installed components and see if this restores operation to your computer and monitor. You may have overloaded your system and either the power supply failed you or the motherboard.You might not have damaged anything yet, but you must take out all the new stuff and test. If the power supply failed, the unit will not start. You must check the units operation on start up. See if the fan is working. If not try replacing the power supply and test again to see if you get operation.If not you may have a problem with your motherboard. This should be tested in a service center where they can check the voltages to the motherboard from the voltage regulators. Hope this helps you with your problem.

The pcie slot in which you are using the card may be some problem , you can try by clening the same by some electronic card cleaner liquid spray. And again try to put the card and boot the system.

It's possible that the laptop is stuck thinking it should be resuming from standby but cannot find the data in memory. Remove the battery, unplug the power cord, and hold down the power button for at least 10 seconds. Then plug JUST the power cord back in and try to boot the system. If you still get no response then it's possible that one of your RAM sticks is going bad. With the battery and power cord removed try removing both sticks of RAM. Then try to boot the system again with only the power cord in use and no RAM installed. See if you get some sort of response from the BIOS. Hold down the power button to turn the computer off again, remove the power cord, and then try booting the system with just one of the memory sticks installed. If you can isolate one of the sticks as causing the failed boot, then that stick is most likely faulty.

I think maybe some how the main graphics for your pc has possibly switched to onboard. Try getting into bios F2 or DEl on boot up and highlight Advanced ChipsetFeatures and press Enter. In here make sure your AGP card is set as the Primary graphics controller. When done press ESC and 'Y' to save settings, then re-boot pc. Hope this gets you running again.