Acert,
I hate to say this bro, but in all honesty, if losing your job means you have to fire sale some PC parts for $300, you probably should sell them anyway, even if you seem to have gotten a temporary reprieve.
Glad to hear you aren't getting laid off, obviously. But I'd still make the sale and use that money for the 'next time it happens' emergency fund.
Then again, I'm on the fiscally conservative side which is why I'm using a 4 year old PC and still haven't purchased any next-gen consoles even though I technically have the money to do so.
Good luck, whether you take my advice or not!