I had the same problem with Hp Slimline motherboards. I own (3) HP Slimline computer's. Model S3020N had the motherboard replaced by HP even though it was beyond the one year warranty because the model S3020N was on their list of faulty motherboatds This computer wouldn't boot up. The model S3620F has the same problem in November of 2009. Sent it to HP for motherboard replacement last November while it was still under the one year warranty. Got it back and it still wouldn't boot. Sent it back again and they replaced the motherboard again in December. Got it back and it booted ok but the wireless antenna wouldn't work because someone at their repair facility cut a wire. Fixed the wire myself. Then the beginning of March it wouldn't boot up again. Contacted HP and they told me that they only have a 90 repair warranty on repairs and I am beyond the 90 days. They would fix it but I would have to pay fo it. I explained the this is a re-occurring problem and that I sent it for a mothertboard replacement when it was still under the one year warranty. That didn't seem to make any difference to them. They did offer to repair it for $99.00 insted of the usual $200. I still felt that they shouldn't charge me so I had it escalated from Case Management to the HP Corporate Compliance C/O Mark Hurd CEO and they sent it to Executive Customer Relations. They called me and said that if I paid the $99.00 they would send me a $30.00 Hp gift card. to spend on HP's online system. However, they couldn't take the $30 off of the $99.00 repair bill. It sounds a little better but I'm still not satisfied because I told them that if I pay to have it fixed by HP that I still have a problem. The problem is what happens after they replace the motherboard for the 3rd time and it fails again after the 90 day repair warranty. Would I have to pay to have it fixed again? Their answer was that I could always purchase a post warranty for a year for $109.00. I thought that was ridiculous. Before paying to have it fixed and paying for a warranty I'd be better of to just purchase another computer. The new computer would already have a one year warranty and upgrades and windows 7 installed. I have purchased HP products for many years. And have thought that they had a reliable product and they cared about customer satisfaction. However, since this last problem with their motherboards and their negative response I will not purchase anymore HP products or recommend HP prodcuts to my family or friends. Now I'm jus waiting for the third Slimline to fail (model S3421P, been lucky so far. PS- I told them I don't unnderstand the 90 warranty on motherboard replacements. I said if I purchase a new Slimline the motherboard is warranteed for one year. It has a new motherboard. But if you replace my defective motherboard with a new motherboard it's on warranteed for 90 days. Makes no sense to me.. They told me that's the way it is and there is nothing more they can do about it.. DON'T BUY HP AND TELL YOUR FAMILY AND FRIEND'S NOT TO BUY THEM EITHER...

Since purchasing a 2008 HP Pavilion Slimline PC a few months ago, I have had nothing but compatibility problems with it's built-in Vista Windows program. I heard about this before purchasing it, but was also told that the problem had been resolved and it was safe to purchase it. The supposed problem-solving Service Pack 1 is a total joke. I am continuously downloading the driver to my HP 6310 printer (also new!) since it won't read it every time. I should have trusted my instincts and switched to a Mac! That's my next plan. HP and Windows just lost my business...permanently!