Microsoft KB Archive/127062

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Mouse Hangs After Windows 95 Hardware Detection

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Q127062

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The information in this article applies to:


 * Microsoft Windows 95

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SYMPTOMS
When you are installing Windows 95 on a computer using Viva Computers' VITEX RS232 (HMC83451) serial card, the mouse stops responding (hangs) after Setup finishes its hardware detection if the mouse is installed on COM1.

CAUSE
Setup detects the COM1 port on the VITEX RS232 card as a parallel port because of the addressing scheme used on the card, causing the mouse to stop responding.

WORKAROUND
To install Windows 95 on a computer containing this card, the mouse must be installed on COM2 in order to use the mouse after Setup's hardware detection.

MORE INFORMATION
The VITEX RS232 serial card has two chips, a UART 16550 and an RS232 (HMC83451). The card supports two serial RS232 ports and one printer port. Because of the addressing scheme used on the card, Setup detects the COM1 port as a printer port.

According to Viva Computers, the VITEX RS232 (HMC83451) card has been discontinued and has been replaced by the VITEX RS232 (HMC83450) card, which does not include a printer port.

The products discussed here are manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Keywords : win95

Issue type :

Technology : kbWin95search kbWin95