Wow I had heard that PC Chips motherboards were not so reliable so maybe you got very lucky lol
I first had a 1997 PC Chips M571 Socket 7 based PC donated from my uncle in June 2000
http://m571.com/m571/. This was a good and reliable if very slow PC due to the low bus bandwidth etc, although it was fine for internet and office apps back then. The lack of provision for decent graphics cards and also poor floating point performance, meant it was rubbish for games and multimedia stuff.
My second in 2001 was a 1998 PC Partner MVP3BS7-954 Socket 7 based PC which was excellent and could do decent gaming and multimedia work, along with everything else. The only real issue for me was it would not work with the SoundBlaster Live! PCI card, and there was no solution to this problem, despite numerous attempts by people around the world to solve it including the manufacturer.
http://www.cprt.spb.ru/anna/myjournal_.nsf/70c9978db19248c9c3256d64003a5053/58a17f9823d98cd6c3256e2f003bd46a!OpenDocument
So on to my third PC which due to events this week I am forced into using again! I bought this ASUS TUSL2-C Socket 370 board back in January 2002, and I ran it with a Intel Celeron Tualatin 1200MHz for many trouble free years and I even upgraded it to a Pentium III 1.4S (server chip with larger cache and 133MHz bus speed). With the Pentium I easily overclocked it to 1700MHz with something like 165MHz bus speed and it was stable too. All this with very ordinary Infineon RAM and a Zalman copper flower cooler.
I am using this old ASUS PC again because a few days ago, while trying to solve a constant crashing/rebooting problem with my 2005 ABIT AS8 LGA-775 Pentium 4 670 3.8GHz machine, I unintentionally killed the BIOS chip as I flicked the PSU cooling fan blades to get them spinning again, and touched the PSU components and shorted it and also the mains plug fuse. I've flicked the fan blades for the past two years or more and had no problems, but this time I was tired and frustrated late one evening and was less careful. So I am now about to sell a few things and buy a cheap used ASUS motherboard from Ebay. I will possibly get the ASUS P5Q so I can continue to use my Pentium 4 CPU and then grab the most powerful CPU it can take, once I see one dirt cheap in a couple of years time. Oh and for the seven years that I used the ABIT AS8, I found it to be a fast and fairly reliable computer. However it did have issues and was even faulty and unusable upon delivery in 2005 from Scan.co.uk, but they did repair it under guarantee within a week. I recently installed Windows 7 on it easily, but my Leadtek WinFast A350XT FX5900XT AGP graphics card did not have any drivers available.
Oh and my oldest working and still being used computer? Why my Atari STE and Falcon 030 of course! They can actually do certain things better than my modern PCs, such as booting into a pro audio and MIDI music sequencing environment, in less than 30 seconds. Granted I have them very well upgraded, but they would still be as fast back in the 1990s except I could not afford to do that then!