Question about APC Voltage regulators

[Dorkenstein]

Can the Line-r voltage regulator from APC have a UPS plugged into it? Or should you not chain devices like that? I'm having some dirty power issues and I speculate that it's causing my dad's computer to not start correctly.

 

[HOOfan 1]

Many UPS come with a power conditioner built in.

Edit: Let me try and be a little more helpful.

Do you already have the UPS? If so what brand and model, it may already have Line conditioning. If you don't have a UPS, instead of getting a line conditioner and a UPS, look for a UPS with AVR.

According to this .pdf, you can plug the UPS into the Line-R, although not stated, I do not think it would be wise to do it the other way around.
http://sturgeon.apcc.com/techref.nsf/partnum/990-1124A/$FILE/990-1124Ap2_EN_REV03.pdf

What are the symptoms of your dad's computer? Dirty AC power should not cause boot up problems, unless it has damaged his PSU. A PSU is responsible itself for conditioning the AC power and converting it to DC...so the DC output to the components should not be affected at all by a dirty AC input...again, unless the PSU has been damaged, but that damage would more than likely have completely bricked the PSU instead of causing boot up problems for the computer.