Solved Booting Problem

August 8, 2011 at 13:36:37
Specs: Win Vista
Nothing shows up on a monitor when I switch my machine (HP Pavilion Slimline - Desktop) on! PSU, Monitor, Hard disk, MoBo, Heat Sink Fan (HSF), RAM, Video Card and Network/Wireless card seem to be in order as I carried out the troubleshooting steps and have received the positive findings. I am just now putting a blame on my exisiting CPU without any evidence.
Please note that I have already unmounted the Heat Sink Fan and the residue of old thermal grease is visible to me and pins seem okay in the CPU. I had to remove the HSF at the last resort as the dust accumulated in the HSF was exceptional. I will remount it using the correct amount of thermal grease after wiping the residue of old thermal grease off with proper cleaning materials if my CPU is in correct order. Is it good idea of confirming the sign of life of CPU by touching it with a finger for not more than 2 seconds and turning the power off instantly if it gets hot? What else is causing a booting problem if I find my CPU in working order? Your help on my request is much appreciated. Thank you

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August 8, 2011 at 15:44:14
I would not recommend that.

Reassemble as a bench test, just MB, CPU, heat sink, power supply, one stick RAM, monitor using onboard video (if available), keyboard (preferably PS2). Begin by resetting CMOS before powering up. If you get a post screen and warning that you have no hard drive, reset defaults or optimal settings. If not post then switch RAM and slot you are using for the memory. If no post then the motherboard is suspect. If still gets to this point (posts), add components one at a time and test (hard drive last). Run Memtest86 through all tests, NO errors are acceptable! If everything else tests OK then install the hard drive. If you do not boot with the hard drive then try a start up repair on your Vista. If that does not work then try reinstalling Vista (full format). If it cannot install then the hard drive is suspect. Use hard drive mfg's utility to test hard drive.

You have to be a little bit crazy to keep you from going insane.

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August 8, 2011 at 16:35:40
Thank you very much for your help. I let you know if it works for me and certainly will follow your instructions. Thanks again.

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August 9, 2011 at 21:22:08
✔ Best Answer
I'm not sure what the troubleshooting steps were but I don't see how you can verify the motherboard is good if you never get a posting screen.

Most of the time, with situations such as yours, it's either the motherboard, power supply or both (since a bad power supply can ruin the motherboard as well).

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September 5, 2011 at 19:14:46
Thanks for your help. I am still trying to find out which hardware is causing. The solution I got from Fingers are extremely helpful but I couldn't remove ethernet card from the PCI and HP pavilion slimline is designed differently and difficult to upgrade or replace. I did try as per his solution but no luck. Heat sink fan is close to ethernet card and there is not enough room for me to pull the ethernet card up. You could be right that it might be PSU or motherboard faulty. I don't have any spare to replace PSU so......... .

Thanks for your help.

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September 5, 2011 at 23:37:27
It's best to have the power cable disconnected when working inside the case as the power supply gives a small charge to the motherboard even when off.

You don't need to use an exact replacement power supply to test it since you're not going to install it in the case. You just need one with the same connections and power capabilities.

Hope you get it figured out.

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