USB Hubs Causing Problems.

[Holclo]

I have just spent yesterday tidying up the cables/wires plugs etc behind my desktop sim. This involved removing and replacing many USB connections via 2 powered 7 port hubs. Now my computer refuses to boot up when both of these hubs are attached to the computer. Remove one and the computer boots up OK. I have connected to the hub I remove (1) printer (2) Ergodex panel (3) Saitek throttle and (4) USB 3DSound . Strange that all these hubs worked happily together before I started tidying. Any ideas what may be happening. I have dealt with some Windows resetting of commands etc. After booting is complete I can attach the 2nd Hub and all works well.
Bill

[dmoblay]

I had a similar problem recently and it turned out to be that the hubs were drawing too much power from the computer. I have to do the same as you now, boot and then plug them in.

Seems strange though that it was working and isn't now, have you added any new devices?

[Holclo]

Thanks for your reply. I have added a Logitech wireless keyboard and mouse which were a replacement for a Silver Crest wireless keyboard and mouse. Now when I think of it I was having a few problems earlier and had to unplug my CP Flight MCP and Efis before booting up and this happened around the time I added the 3DSound USB so maybe the problem stems from there. I was suspecting a power problem but as both hubs are powered could that be the case?

[Polmer]

I also have had the same exact problem.

When I attached my USB Hub, windows would hang at the CMOS screen and windows wouldn't boot. I would have to play around with it for many hours ( plugging in things in diffent order, ect) for it to finally boot. Then, If my PC lost power due to a storm or something, I had to play around with it again.

Today, I went into CMOS and made 2 changes.
1. I did not have "Plug & Play " enabled, so I enabled it ( I read this may help).
2. I found a setting under USB Mode, and it had 2 choices, High speed, or Full speed. I changed this option, and now it boots up!

Not sure this will work for you to, but its worth a try.

For the record, I have a ASUS P5B Deluxe motherboard and am using a powered USB Hub.

~Polmer

[Holclo]

Thanks Polmer I literally one minute ago removed one of my 7 port hubs and replaced it with a 4 port hub I previously had been using and the PC booted up no problem. So maybe the cheap 7port was causing my problem.
Bill