On V2000 there is a thermal pad on the GPU. Did you replace the thermal pad also? This needs to be replaced every couple of years or every time you remove the heatsink. You shouldn't use same thermal pad again. You must replace it with an exactly same new thermal pad or with an aproprate gummy thermal paste that is specially designed for thermal pad replacement. Such paste is K5-PRO which you can see on youtube here http://www.youtube.com/watch?v=7gD4ZBOp-bE it is also avaliable on ebay here
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Verify that the Fan and vents are free of dust, use a can of Compressed Air the clear the vents, heat sink and fan. Improve air flow from the bottom of the laptop through the machine and out the vents. Use a Laptop Cooler with multiple fans. If necessary replace the Thermal Paste on the Graphics Adapter and CPU. Overheating will cause catastrophic damage/failure to the components. When the Laptop sensors read a specific temp it will shut down to prevent damage. I'm not sure if this freeware program will work but you can try: http://www.filehippo.com/download_speedfan/ ALSO, try this freeware program. RAZER GAME BOOSTER, to disable ALL unnecessary, you select/configure, to improve Gaming Performance: http://www.razerzone.com/gamebooster It may help to reduce heat by stopping some services , reducing the CPU and Memory load.
This sounds like it could be an overheating issue. Some manufacturers use a cheap thermal paste on their processors. If you are dealing with a computer this should be an easy fix but if you are dealing with a laptop then it is much more involved. Go to Youtube and research replacing or removing heat sink. You wont be replacing the heat sink but the procedure is the same except you will need to clean the old paste off your heat sink before you apply more. Don't go crazy with the paste, a little goes a long way, all you are doing with the thermal paste is ensuring full contact between the processor and the heat sink with no air gaps.
Step 1: WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. http://www.kitchentablecomputers.com/static.php - rules Only work inside the computer case when the power has been switched off and disconnected. Never open the power source. Some of the below steps recommend removing physical parts within the computer. While in the computer it is highly recommend that you be aware of ESD and its potential hazards Laptop fans are designed to keep the system cool by removing heat from the hard drive, processor and other internal hardware components. The fan draws cool air in, then blows hot air out through vents in the laptop case. A faulty laptop fan can cause permanent damage to occur very quickly. If a laptop fan starts making loud noises or stops blowing hot air through the vents, replace it as soon as possible.
Turn the laptop off and unplug it. Unplug or disconnect any external drives or other devices. Move the main battery latch to the "Unlock" position and remove the battery pack. Push in on the optical drive release mechanism, then pull the CD/DVD drive out of the case. Remove the screw(s) that hold the hard drive sled in place, then pull the entire hard-drive assembly out of the case slot. Turn the laptop over. Remove the screws on the bottom that hold the keyboard assembly in place. Flip the laptop over then open it. Lift the front of the keyboard up about 1 to 2 inches. Unplug the flexible ribbon cable that connects the keyboard to the motherboard, then pull the keyboard assembly away from the bezel. Lay the keyboard aside. Unplug the laptop fan. Remove the screws that hold the heat sink/fan assembly in place, then remove the fan from the laptop. Check you CPU central processing unit make sure its securely seated and has thermal paste it might be getting to hot the thermal paste will help disperse the heat Thermal compound is a sticky paste that is placed directly onto the CPU. http://www.hardwaresecrets.com/article/Thermal-Compound-Roundup-February-2012/1490 Allowing for a more direct heat transfer between the CPU and HEAT SINK and preventing air gaps from forming between the CPU and heat sink. http://www.youtube.com/watch?v=Bwr3vxSErs0How to fix an overheating laptop : Clean your fans and heatsync with this procedurehttp://www.youtube.com/watch?v=ZXd09C0p-CcHow to clean a laptop fan
When the CPU overheats then it will shut down (i.e. thermal overload) and won't boot up again until it has cooled down. If this is the problem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are clogged with dust. Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged with dust the remove the dust and make sure the vents are clear and dust free. Use a small brush and can of compressed air to do this.
Three reasons a laptop will overheat and shut down:
1. Dust - Dust inside, dust clogging the vents, dust around the cpu and
heat sink. Blow out the dust with a can of compressed air.
2. A Fan not working. Take the laptop apart and replace the fan. Just
put Dell Inspiron 1501 Fan in the seach box on ebay. You'll see plenty
of them at:
3. Thermal Paste around the CPU and Heat Sink has dried up or is too
thin to keep the unit cool. Apply a fresh coat of thermal paste on the
cpu and heat sink. Even if you just change the fan, apply a fresh coat
of Thermal Paste.
Also you can buy a Laptop Cooling Pad at Tiger Direct for under $15. It
plugs into one of the usb ports and the laptop sits on it. It has fans
to keep the unit cool.
Maybe it is overheating and it shuts down so that it does not damage the motherboard.
Three things that will cause a laptop to overheat. 1) Dust - Dust inside the computer, dust clogging the vents, dust around the fans, cpu and heat sink. Remedy - The best remedy is to take the laptop apart and blow the dust out with a can of compressed air. If you don't take it apart you could blow out the vents with a can of compressed air and it might work, but you will be blowing the dust inside.
2) A Fan not working. The laptop will have to be taken apart to replace the fan.
3) The Thermal Paste around the heat sink and cpu had dried up or is too thin to keep the unit cool. Take the laptop apart and apply a fresh coat of thermal paste around the cpu and heat sink.
One sure sign of overheating is that if you immediately try to power the laptop back up, it will not boot. But if you wait awhile and let it cool off then try to boot it up, you can boot successfully until it gets hot and shuts off.
You could also try a Cooling Pad that plugs into the usb port and the laptop sits on it. It has fans to keep the laptop cool. The pad can be purchased for under $20. Try Tiger Direct at: http://www.tigerdirect.com
When the site comes up just type in the search box at the top: Laptop Cooling Pad. When the search results come back sort them by Price Low to High and you will see them starting at $5.99 or so.
Sounds like your laptop might be overheating. Does it reboot successfully immediately after is shuts down after 5 minutes or does it have to sit awhile before it reboots successfully?
If you can't boot it right back up after it shuts down, then it is definitely running hot and will only boot back up successfully after it sits awhile to cool off.
Things that cause it to run hot: 1) Dust... Dust clogged in the vents, fans and around the cpu and heat sink. 2) A Fan is not working 3) The Thermal Paste around the CPU and Heat Sink has dried up or is too thin to keep the unit cool.
For the best results you'll have to take the laptop apart to remedy the situation especially if you need to get to the Fan, CPU or Heat Sink.
You can try a can of compressed air and blow out the vents and fan area, that might work for a while but you'll be blowing the dust in. It's best to take it apart and blow the dust out.
When the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail. A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith dust. Check the CPU fan to see if it spins freely, if not replace the fan. If the fan and heat sink is clogged with dust the remove the dust and make surethe vents are clear and dust free. Use a small brush and can of compressed airto do this.