Black Screen on Start up - Sometimes boots- satellite A215-S5849 A215 S5849 A215S5849

I have had an intermittent issue with this satellite A215-S5849 of randomly turning itself off in the middle of tasks. Usually it is easily remedied by simply holding down the power button until off, then turning back off. Sometimes it has required me to removed the battery and AC adapter, then reinsert, then plug back in, then restart.
Recently, since I haven't been using it as much, often when I attempt to power it up all I get is a black screen. The power light comes on, the battery light comes on, the satellite logo lights up. If I have a DVD-rom in there you can hear it attempting to boot. Occasionally you will hear the hard drive attempting to boot and see the harddive light turn on.
It would not start again a couple days ago so I left the battery out and unplugged for a couple of days and was able to get it to power on and attempt to update the bios, per the supports recommendation. It did the random immediate shut down thing again and now it is back to the above black screen, power, and battery light. DVD-rom will spin and light, I don't see a hardrive light, satellite logo is lilt.
ANY ideas? From what I have read this is apparently a problem that is running pretty rampant with these systems and I very much need help correcting this issue.
Thank you for your time.
NurseBrittney

It seems that this problem is with the power settings... strangely. You do not need to re-install windows or anything crazy like that.
Here are the fix steps:
1. Turn off your computer
2. Disconnect every wire from it (including power)
3. Disconnect the battery from the bottom of the computer. There will be two tabs labeled 1 and 2.
4. Re-plug in the power wire. (the battery should not be in the computer)
5. Turn on the power. The screen will work. Choose start windows normally. (if you get that screen)
6. Go to Control Panel -> (Mobile PC) -> Power Options -> Under Balanced choose change plan settings
7. Choose Change advanced power settings
8. Find Processor power management and change the minimum processor state from 5% to 100% for each On battery and Plugged in.
9. Click Apply then OK
10. Shut down you computer.
11. Disconnect the power cord.
12. Re-install the battery on the bottom of the laptop, plug in the power cord, and restart the computer.
This should work.

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Black Screen on Start up - Sometimes boots- satellite A215-S5849 A215 S5849 A215S5849

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