HP Media Center PC m7250n will not power up

shorted processor out from static.

Go to HP Support & Drivers 1

Your recovery disc may be faulty try again reinstalling Windows XP

This particular model of computer is known to have bad capacitors. If the capacitor that regulates power to the onboard graphic chip is bad, you will not get a video output.

enjoy the power of a PC

your power supply is faulty you will need to replace it. If you recently installed a new hardware it could be you don't have enough power to, either upgrade you power supply or remove the hardware.

Try to follow the link-
http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph04375&cc=us&lc=en&dlc=en&product=1118243

This would help

You need to unmute the line-in and adjust its level as necessary. Usually you can just double click on the speaker icon in the system tray and the Line In is by default muted and it is on the far right column (depending on your setup). If it is not displayed, click on Options and Properties and put a check mark by Line-in so that it will display.

Hi, Azrul here, from Malaysia. You can disable the sleep function for your HP Media Center m7250n before connecting to tv.

Go to control panel
then go to display
then go to power under the screen saver's tab
then set your power options to never go to sleep at any settings.

chk wether u r getting any lights on motherboard??

Cilck this Link:

This will open the driver selection page.
Select your Operating System, download all required drivers...and finally..... :))

Thanks
Iqbal