freezes a lot, cpu usage

[aed1980]

my dell has been freezing up a lot, did a factory reset, and no fix. also i check cpu usage and its in the high nineties, even though no app running, at least the ones i can see.
any solution will be appreciated!!!

 

[B. Diddy]

Try booting into Safe Mode, which temporarily disables all 3rd party apps. On most Android devices, while powered on, press and hold Power until the Power Off menu appears. Press and hold the Power Off selection until the Safe Mode prompt appears. Tap OK.

If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem.

Do you have any "RAM booster" 3rd party apps installed? If so, I'd start by uninstalling those, since they're often counterproductive.