I have a Inspiron 545 that has started acting up. If it is powered down or sometimes goes to sleep, it will not power up. Can press the power button and nothing. Sometimes you can hear a little crackle through the speakers and sometimes you can see the fans trying to start. Light on the back of the power supply is on and green. Amber light on the motherboard is on. I tries leaving power unplugged and fully discharged for hours but no avail. Can remove the CMOS battery, wait 30 seconds and replace it. Press the power button and still nothing. But within 10-30 minutes, I will begin to hear crackles through the speakers for about 30 seconds and then the computer will start up. Have to update the BIOS for the date/time but then the computer starts and runs fine. Any ideas what would be the cause of this?
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