HP Media Center PC green light flashing

albarras · 11-29-2008, 08:15 AM

There seems to have been a power surge at my home when I was on a trip. My HP Media Center PC will not turn on; nothing but a green flashing light on the back panel. Probably the power supply. Any other ideas?

**grimx133** · 11-29-2008, 09:24 AM

I'd try unplugging it for a while, also press the power button while it's unplugged, either a few times or press and hold it for at least 30 seconds. This will discharge the capacitors on the motherboard. If this doesn't work, then try a cmos reset, take out the coin cell battery on the motherboard and see if there are any markings on the board saying something like CLR_RTC. If there is, it will be next to either 3 pins with a jumper, 2 pins or 2 solder points. 3 pins you change the jumper (usually from pins 1&2 to pins 2&3) then change the pins back again after a couple of minutes. The pins have to go back as 1&2 is the run position and 2&3 is the clear position. If there are just 2 pins, then you bridge (short) them with a screwdriver or whatever is handy. Same if it's 2 solder points. Put the battery back and try it again. Even though your just trying to get it to start, the way to tell if a cmos clear worked is if you have to set the time in bios after.
And if that doesn't work, you'll need to either borrow a known working power supply and try that, or test it with a multimeter. Test your power supply with a multi meter

11-29-2008, 08:15 AM	#1 (permalink)
albarras Registered User Join Date: Nov 2008 Posts: 1 OS: XP serice pack 2	HP Media Center PC green light flashing There seems to have been a power surge at my home when I was on a trip. My HP Media Center PC will not turn on; nothing but a green flashing light on the back panel. Probably the power supply. Any other ideas?

11-29-2008, 09:24 AM	#2 (permalink)
grimx133 Mentor Hardware Team Join Date: Jan 2008 Location: Canada eh Posts: 3,149 OS: xp mce sp2, xp pro sp2, windows 7 beta My System	Re: HP Media Center PC green light flashing I'd try unplugging it for a while, also press the power button while it's unplugged, either a few times or press and hold it for at least 30 seconds. This will discharge the capacitors on the motherboard. If this doesn't work, then try a cmos reset, take out the coin cell battery on the motherboard and see if there are any markings on the board saying something like CLR_RTC. If there is, it will be next to either 3 pins with a jumper, 2 pins or 2 solder points. 3 pins you change the jumper (usually from pins 1&2 to pins 2&3) then change the pins back again after a couple of minutes. The pins have to go back as 1&2 is the run position and 2&3 is the clear position. If there are just 2 pins, then you bridge (short) them with a screwdriver or whatever is handy. Same if it's 2 solder points. Put the battery back and try it again. Even though your just trying to get it to start, the way to tell if a cmos clear worked is if you have to set the time in bios after. And if that doesn't work, you'll need to either borrow a known working power supply and try that, or test it with a multimeter. Test your power supply with a multi meter __________________