computer wont register my keys

ive had this keyboard for a while, its a dell one which came with my computer. the problem is that it wont register some of my keys. for example, i will type "the quick brown fox jumps right over the lazy dog" while holding both shift keys. the result is this:
HE QUIK BROWN FO JUPS RIGH OER HE LA DOG

this, as you can see, its a major disadvantage when i need to press multiple keys while gaming as some keys dont register. so im looking for a new keyboard, it must be illuminated, it must be able to press more than 8 keys at a time, and it must be lower than $40. if anyone can please help me search for one, id really appreciate it. i looked at newegg and some other sites but all of theirs are very expensive. thanks in advance

Don't hold both shift keys to type sentences and you should be alright.

i said i needed it for gaming not typing, it was just an example of what my keyboard does. frets on fire for example, i need to hold 5 keys at once and i cannot do that.

Recommend Logitech Rumblepad II.

no thanks, i already have a Tomee wired joystick and it works just fine

The key phrase might be "I've had this keyboard for a while."

no its not. the correct phrase would be my keyboard does not have an n-key rollover, and i am looking for one that does.

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ive searched that before, everything is too expensive, does not have a backlight, or is WAY too expensive

paronomasia said:

ive searched that before, everything is too expensive, does not have a backlight, or is WAY too expensive

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So what are you hoping for from us at the forums - to design, market and make available one that fits your criteria?

...just saying...

no im trying to look for specific suggestions, user reviews, comparisons, that fit the criteria, from people in these forums