I've installed 32-bit Mint 15 Xfce on this old Compaq system.
The mainboard ID's itself as a Pegatron NARRA5 Compaq Model CQ5625 in the BIOS. I got the board from the trash. The person who chucked it stripped off the northbridge heatsink and CPU mounting bracket. I replaced both, put in a Sempron 3600+ I had on hand and 1G and 512MB sticks of RAM. I tried to put in an Nvidia graphics card, but the replacement heatsink on the northbridge is round and blocks the PCIe slot from long cards fitting. I need to find a low profile nvidia card or I'm stuck with onboard graphics. It boots up fine and rock stable in 32-bit Mint 14 Xfce but is slow and hangs randomly in Mint 15 Xfce.
I wiped the first installation I had after I tried to installed Nvidia drivers and couldn't undo the mess they created. It may or may not be related that the CPU is being clocked to 1000Mhz from the 2000Mhz it's supposed to be. Though Mint 14 live CD also does this and it has none of these issues.
The new installation has the same issues as before. I didn't install the Nvidia drivers this time and I have a random video crash. The screen either goes to the gray background of the desktop with the rest disappearing or the screen shows diagonal lines which look like the old CRT TVs with bad horiz hold. I didn't have a fan on the northbridge heatsink since it was originally passive only. When the graphics issues I've been having I added the fan and have seen no difference except the heatsink is now ice cold and inside the case is well ventilated. And since only Mint 15 has these graphics issues it's some driver or something in Mint 15 causing this issue. I have also run Puppy Linux live CD and it too has not problems.
So where do I start troubleshooting? Note that the desktop environment sometimes crashes before I can do very much and other times it might go longer than 10 or 15 minutes.
If I can get it to boot long enough I'll post the results from inxi -Fx in the Mint 15 installation in a few minutes.
*edit* I couldn't make it output the inxi -Fx at all. It crashed with the graphics scrambled every time I tried. *end edit*