How do I bring my Inspiron 5100 laptop posterior to factory settings? It is really slow?

Every time I try to use the F# key when the computer starts up it beeps loudly or ignore the key nouns. Can someone help?

Answer:
Do you still hold the restore that the computer came next to? Just put it in cd rom drive and permit it go from nearby. Set it to go restore to innovative state that it came next to. If you don't have it I believe you can other contact the manufacture to catch the restore disk.
The beeps communicate you of a malfunction in your system. If it is really slow then I would suspect that the RAM is malfunctioning try removing the Ram stick(s)) and re chairs it or if you have not long replaced a Ram stick it may not be compatible with your system.
Bad Ram is the most adjectives reason for blast codes at startup

The caps lock, scroll lock and num lock lights will display error codes within set patterns. A guide of 5-1-2, where the lights flash within a series of five, then one, and consequently two, or a pattern of 0-1-1, where on earth all three lights initially come on, but the num lock pallid goes bad, are both indications of a memory error.

Try this : remove all CD's Floppy Disk's External devices such as a knob board , mouse. printer, camera dock, PC card, web cam, ETC. Unplug the computer and remove the freestyle. Press the power button to discharge the residual power. Remove the memory DDR sticks.If you only own one stick put it into a different socket. If there is a memory stick that be not factory installed remove it. Plug in the AC adapter and boot the computer At the POST(when you see the Dell logo) Press the F2 push button and try to enter BIOS.If that was sucessful you are apposite to go if try one memory stick at a time in different slots.

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