Is it bad to have computer running while the pc tower is open (side of case removed)?

my pc suffers badly in heat and often freezes/reset


ive taken the side of the tower off to clean it and now i leave an external fan on it to keep it cool.





this definlty works as my pc freezes almost as soon as i turn the fan off.





if i turn the fan off and put the side case on, will this keep it cooler than leaving the case off wioth no fan?Is it bad to have computer running while the pc tower is open (side of case removed)?
this is a band-aid for the problem; your cpu does not have sufficient cooling or the ventilation of your case is blocked by something.Is it bad to have computer running while the pc tower is open (side of case removed)?
Wont hurt the pc immediately but it will get very dusty inside the box if it is left open too long. Dust will affect the boards and circuitry. There is also a chance that some parts may be damaged by or cause damage to, other electronic equipment nearby. The box is earthed via the mains lead for this reason.
Apart from having to clean accumulated dust and insects (?), no problem. It is better than it overheating with the side on. Keeping it cool is important.
No, unless u don't let anything to get in ... like baby.