It's the caps.
Operational Signs
If your computer is acting up but has not yet failed you, symptoms of a faulty capacitor include:
My Acer Notebook, after three years has started acting-up on cold (overnight) start-up. It seems to hang up on the (Press F2 ) boot menu screen for sometimes as long as 35/40 seconds then goes at normal speed for the rest of the boot.
When it is warmed up and I either press "restart" or I shut down and start it while it is still warm......No problems!
Operational Signs
If your computer is acting up but has not yet failed you, symptoms of a faulty capacitor include:
- Difficulty turning on your computer, frequently having to hit reset or restart
- Instabilities (hangs, seeing the “Blue Screen of Death,” etc.), especially when the symptoms get progressively more frequent over time
- Memory errors, especially ones that get more frequent with time
- Spontaneous reboots
- In case of on-board video cards, unstable image in some video modes
- Failing to complete the POST (Power-On Self-Test) or rebooting before completion
- Never starting the POST; fans spin but the system appears dead
- Power system malfunctions, fluctuations in system voltage, possibly with an increase in CPU temperature as the core voltage rises
- In the case of Dell Optiplex GX270s, often a “Thermal Event” is brandished in white on a very dark computer display when rebooting.