New motherboard on M1330 causing laptop to run very slowly

After numerous bsod's/freezing black screens/freezing multi-coloured screens, multiple reinstalls of drivers and a complete reinstall of Vista, Dell finally replaced my motherboard.

Laptop was running perfectly... for 10 minutes... and then it started to slow down big time. I rebooted a couple of times, but still the same problem running very slowly. I went to pcpitstop.com and sure enough my cpu speed, graphics speed and memory speed were abysmal. The laptop is also running a LOT hotter than with the previous motherboard. Using SpeedFan I am seeing temps of 75 degrees C. I've used Process Explorer and there are no processes running that are hogging the CPU. System Idle is at about 82%.

Are there any other tests I can run before trying to persuade Dell to get me yet another new motherboard?

 

the heatsinks may not be 100% attached causing it to overheat. Call up dell again and ask for it to be fixed or replaced again.

 

Also running slow could be to all the setup programs running in the back ground. Disable what you don't want to run on start up...
For a free program and spy ware download and install spybot once install it has settings to disable startup programs if you don't know how to...

 

time to call dell and tell them its still not fixed and is now worse.

 

If you're within the 21 days since your laptop shipped, you can ask for a replacement

 

I second the opinion that your heatsink is not attached properly. The CPU runs fine until it begins to heat up. Once it reaches the high thermal setpoint the CPU will begin to shut down to prevent damage. That sounds like what your machine is doing. You could do a quick check by removing the heatsink and checking to see if there is a thermal interface pad in-between the CPU and heatsink. If there is a pad you'll be able to tell if the heatsink was properly seated by how the pad looks. After checking I would try mouting the heatsink again. If you need detailed instructions you can d/l them from dell.com.

 

With this in mind I would try to get them to resolve the issue and if it persists then you have their unresolved issues department to resort to. Try to give them a complete but concise description of the issue, steps taken to try to resolve it, and the end result. They will contact you within a week and let you know how they are going to handle it. They replaced my laptop after only 4 months. I've been issue free since for the most part.

 

Thanks for the tips guys. I ran the Dell Diagnostics, and indeed the fan is not attached properly. The system must detect this and slow the computer down to prevent damage? The laptop is very slow right from bootup (before it gets warm). Like I said, it's got nothing to do with any processes running as I've run Process Explorer and Startup Inspector to check.

A tech is coming out again next week with a new motherboard and CPU.

My main concern is that some damage has been caused to the memory? I upgraded after the laptop arrived to 4GB.

I've had my laptop 5 months.

 

So, what was it in the end? You all set now?