My computer turns on with the fans at maximum speed and stays at max speed usually they go to normal speed after a few seconds when my computer turns on the hard drive turns on but nothing happens it just sits there running at max speed nothing appears on the screen except it says "no input signal" but its plugged into the computer, but the monitor i think is not the issue it just wont start up thanx
I had this happen sometimes after a windows update/reboot. If the computer is on, hold down the power button until it cuts off. Unplug the power cord. Wait for a couple of minutes. Plug the cord back in, and turn on system.
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First thing is make sure when you changed the battery you would need to check the jumper that allows you reset the BIOS and let you use the computer.
The other is the fan speeds it normally should go a little high not so high but in your case the CMOS battery that was installed could cause some things not to work especially if it supports PCI-E. The motherboard in your system must have a dual video connector. One is on the board and one is on the PCI-E. Make sure the monitor is plugged into the right port. It should work after that. If not remove the PCI-E card and see if it works with the onboard connector.
what u may have done is wwhen u were installing the new board, gave a static shock to the system...that will cause only the fans to come on and nothing more...this is a bad problem bc u cannot fix it...if u figure out something else is wrong, and it gets fixed, let me know
1. Bad temp sensor
2. Bad voltage, but that will usually cause the whole system to restart
3. Too low maximum temp setting inside the chassis(setting is in bios), often denote as max case temp.
One way to bypass the problem is rig the fan to a molex adapter with a variable voltage molex to 2/3/4pin fan connector and adjust the speed to the maximum quiet setting.
The 831's did run a bit warm so if the case temp setting is set to low it will fluxuate quite a bit. Try adjusting the max case temp up around 50c just to see if that does it, if it does either use the variable voltage dial solution or add a second case fan that's always on, prefferably a low RPM running direct off molex so it will reduce the average temp and therby the need of the monitored case fan to rev up.
When you start up the PC, do you get any kind of beep sound? If not, I would reckon the RAM modules are faulty and would need to be replaced first. That is the usual cause for this kind of issue. Also when replacing the modules, make sure they are the type supported by your motherboard, ie DDR, DDR2, etc. You will have to consult your m/b manual for this..
If the problem is not with the RAM, ie you hear a beep, but nothing else, I would guess that the MBR of your operating system is dysfunctional, which would mean that you would have to reinstall the operating system.