Over on ZDNet I've got two posts that PC Doc readers might be interested in.
Build a cheap, overclockable PC 

I've had a number of enquires from readers who want to build (or buy) a cheap yet powerful PC.  Can it be done?  You bet!  What components will you need to buy?  Read on!

Speed up your PC [...]

I've been moving hard drives between PCs today - this is less hassle than reinstalling.  Usually though, when I've swapped hard drives between PCs the PC's booted up to Windows just fine (I usually uninstall the graphics card driver first but this isn't really necessary).
However, I had two PCs to do today and neither booted [...]

Over the past few weeks I've had a number of questions from people about PSU (Power Supply Units).  So many that I drew up this quick FAQ.

Are all PSUs the same?

No.  The main differences are:

VoltageSome are designed for either 115 or 230 Volts, while others can be switched.
ConnectorsATX12V PSUs had a 20-pin motherboard connector while [...]

Quick quiz!
Pop over and take a look at this post  on Make You Go Hmm and pay attention to the picture of the inside of the PC - there will be a test!   Go on, I'll wait for you.
OK, welcome back - here's my question:
What's wrong with what you saw?
...
...
I bet you  it instantly - [...]

The screw thread that is used to secure my graphics card in place seems to have been stripped and won't hold a screw.  This means that my PCI-E graphics card keeps on popping out of the slot.  I can't move the card to another slot so I'm stuck as to what to do.  Any ideas?

It's [...]

I've had a PC that belonged to my daughter here for repair that had a really strange fault - an intermittent motherboard problem. 
This PC had been experiencing an intermittent problem for some time.  Basically, it wouldn't power up properly.  Switching it off and back on again worked for a while but it finally died [...]