Problem power cycling switches

We use inexpensive unmanaged switches (Netgear, Dell PowerConnect) on our company's manufacturing floor.  The electricity gets shut off every night, and the next day we get connection problems.  Sometimes we have to unplug the Source cat 5 cable and plug it back in to fix the problem.  I've had experience in the past where I've had to turn a switch on without anything else plugged into it and *then* plug in all of the cat 5 cables into it after it was already on.  I'm trying to fix this problem without having to run a constant electrical source that doesn't get shut off at night to all of the switches if possible.  Are there inexpensive switches that respond better to being shut off and turned back on?  Is there a feature of certain switches that I should be looking for that will resolve this problem?
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You can take many approaches:
1) Connect them to UPS
2) Connect them to fire alarm power
3) Try different brands - Dlink, Linksys
4) Replace as much wires as you can with wifi, esp where it touches entertinment and not manufacturing.

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JohnBusiness Consultant (Owner)Commented:
I always put key networking gear on good UPS units. Switches do not normally draw a lot of power and so a decent APC UPS unit or like will do well. I do this at all my clients and my home office.
Davis McCarnOwnerCommented:
Any decent unmanaged switch should not have any problem with turning them off at night and I suspect the problem is with the PC/device acting as the DHCP server.  I, for example, have a second router, isolated from my internal LAN, which I use for working on client's machines.  About once a month, I have to cycle its power as it just plain refuses to hand out IP's to new devices.
What are you using for DHCP?
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Declan_BasileITAuthor Commented:
I have a DHCP server running on a Windows Server.
Declan_BasileITAuthor Commented:
I think I'll have to have a electrician run lines to put them on a power supply that doesn't get turned off.  Thanks for all the advice everyone.
JohnBusiness Consultant (Owner)Commented:
@Declan_Basile - You are very welcome and I was happy to help.
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