Desktops forum


HP Pavilion m8100n, Flashing Power Light, No Video

by MadDog843 / February 19, 2014 10:01 AM PST

I have an HP Pavilion m8100n Media Center Desktop PC. It's a late summer 2007 Model, that came originally with Vista Home Premium 32-Bit. Original Specs are AMD Athlon 64x2 5600+ Dual-Core AM2 Processor @2.8Ghz, 3GB DDR2-667Mhz Ram (2x 1GB, 2x 512MB), 500GB SATA Hard Drive, 16x DVD-R/W Drive w/ Lightscribe & a Hauppauge Win TV HD PVR-1600 TV Tuner.

I upgraded it to Windows 7 Home Premium 64-Bit in 2009, and upgraded it to 6GB DDR2-667Mhz Ram. In 2012 the original Hard Drive Failed and I put in a 160GB SATA Drive and a 250GB IEDE Slave until I could afford to put a new drive in it. I then came across a cheap used 500GB SATA and put that in about 8 months ago. I also have been running a Windows 8 Pro w/ Media Center and Windows 7 Home Premium 64-Bit Dual Boot.

I recently got a killer deal on two Seagate 2011.7 1.5TB SATA Hard Drives, one that I put in my Gateway Quad-Core Desktop and one in this HP. The Gateway is working great (The comp I'm using Now) and so was the HP for a while. I re-installed Windows 8 Pro, and upgraded it to 8GB DDR2-667Mhz. Everyone worked just fine for the first while, then I went to turn it on, and the Power light started flashing (These ones have an amber light for sleep mode, so I knew it wasn't that It also sounded like each time was a small beep everytime it flashed. It would flash six or seven times, then the fans would slow down and it would go through it's boot sequence, but there was no video. A couple days later I came back and it worked just fine for about three weeks.

The other day, I decided to upgrade it from PC2-5300 667Mhz RAM to PC2-6400 800Mhz RAM, two of the modules in it were already running at 800Mhz, so I bought another two and did the upgrade. Everything went smoothly and Windows booted up just fine. A few days later I decided to install Windows 7 Ultimate for my Dual-Boot and it started the the blinking light and no video on boot. I took my video card out of it and tried off of the motherboard video, but no chance. I left it and came back about an hour later and it only flashed three times, then my monitor came on and it went through it's boot sequence. When Windows 98 loaded, I got a Blue Screen of Death and then back to the flashing lights again and no video. I tried to reseat the RAM but to no avail. Any other ideas? None of the capacitors on the board are humped or vented. Thanks!

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Clarification Request
That video card doesn't look stock.
by R. Proffitt Forum moderator / February 19, 2014 1:32 PM PST
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by MadDog843 / February 19, 2014 1:48 PM PST

This video card has been in this computer for over four years. The specs on the card say it only needs a 250W Power Supply. I'm hoping that the new Power Supply I ordered helps, as I have a better Video Card to add to the system as well that requires at least 350W. I'll try stock when I have time. I have removed the video card and tried it off of the On-Board video, but to no avail. I've also tried a less powerful card, and still no video. I'm down to three thoughts, either corrupt BIOS, bad memory modules or the Power Supply.

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Move back to stock. But 4 years is a long time.
by R. Proffitt Forum moderator / February 19, 2014 1:54 PM PST
In reply to: Interesting

If I remember the 4350 (we had a few at the office) it was not a low Watt board. So this is a strain and ages the PSU faster. Remember there is no "solid state" power supply. The electrolytic capacitors will age and you lose some capacity each month.

The suspect is the PSU and that's a cheap part to start with.

Again, the fact it was in there for years is a good sign it's likely the PSU rather than it isn't.

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To Bettery Clarify
by MadDog843 / February 19, 2014 1:53 PM PST

This video card was recommended for use in this system with it's stock configuration. This is a lower consumption 4350HD Card with no fan. I bought it this way so that I could use it with my original Power Supply

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Yes you could
by R. Proffitt Forum moderator / February 19, 2014 1:57 PM PST
In reply to: To Bettery Clarify

But it's still pushing more Watts and given the age would be the first part to change.

Two things.

1. If you feel you can't risk changing the wrong part, find a shop counter to do the repair. They'll have a shop PSU to try out and then can tell you if that's it or another part. Some folk can't stand to replace the most likely part, then the next.

2. Think of it like a car. Running at 80MPH sure it can do that but the car at 65 will go so much further till it needs repair. This is why I never run a PSU at over 50% rating. Folk get upset at failures under 5 years.

All Answers

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For Extra Clarification..
by MadDog843 / February 19, 2014 10:05 AM PST

Just for extra clarification, the current specs are as follows:

AMD Athlon 64x2 5600+ Dual-Core Processor @2.8Ghz (Original OEM)
8GB DDR2-800 PC2-6400 Dual Channel RAM
1.5TB Seagate SATA Hard Drive
ATI Radeon 4350HD 512MB PCI-E x16 Video Card
16x DVD-R/RW Combo Drive w/ Lightscribe (Original OEM)
300W ATX Power Supply (Orignal OEM, new 500W ordered)

Had original Motherboard as well

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