System: Pentium D 3.4Ghz, 2GB RAM, Windows XP Professional
Q: My computer runs very slowly even after deleting all of the partitions on hard drive and doing a clean install so that only Windows is running. All the solutions I’ve found indicate this is a software problem solved by cleaning all non-essential files and the registry. But with a fresh install this can’t be so, could this be a Hardware problem?
A: If the system is slow even after a clean install then there are a number of things to look at. Most likely cause is the processor, keep an eye on the POST screens as the machine boots up, this should tell you if the CPU is being detected at the correct clock speed. If it tells you that your processor is slower than 3.4GHz then it may be that the bus clock speed or multiplier has changed in the BIOS. It may also be that the processor is overheating – modern CPUs are designed to switch to a lower clock rate in these circumstances in order to protect themselves from damage – check that the cooler fan is working. Or it’s possible that the CPU voltage is too low, which could be a symptom of a failing power supply.
The next thing to look at is the memory. Try removing and reseating the RAM modules, blow any dust out of the slots with compressed air, you can also try gently cleaning the contacts on the bottom edge of the DIMMs with a soft pencil eraser.
Finally the hard drive could be failing. The best way to diagnose this is with a program that can read the disk’s SMART data. Try CrystalDiskInfo or the no-install Open Hardware Monitor which will also help you investigate other system temperatures and voltages.
Open Hardware Monitor can help you diagnose temperature and voltage problems
Originally featured in PCU 139
