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It is very important to fully test ALL the PowerPoint presentation equipment that a speaker will use for the presentation beforehand. Here are some helpful tips to make this a potential seamless process. 

1. Ask your speakers to come early. Check to make certain their meeting equipment or accessories (CD, DVD, or USB) is compatible with the Presentation Services Audio Visual company’s equipment. Don’t assume the PowerPoint presentation will work on any laptop. Disk failures, software version mismatches, lack of disk space, low memory and many other factors can stop a PowerPoint presentation dead in its tracks.
2. Make certain the LCD projector is on, working correctly with the laptop, and that the Presentation Services Audio Visual company has replacement lights in case the lamp burns out.
3. If the speaker is using a wireless slide advance, make certain it works and that the Presentation Services Audio Visual company has spare batteries for the unit.
4. If the speaker is using their own laptop, confirm that the battery is fully charged. Even with electrical outlets, room configurations can often change the day before the event. Don’t be caught far away from an electrical outlet with a dead laptop. If the speaker is not bringing their own gear, rent a laptop and make certain it is compatible with the speaker’s presentation.
5. It is important the Presentation Services Audio Visual company know where all the electrical outlets are in the room, have ample extension cords available, and secure all cords to the floor with tape. We don’t want our speaker to fall!
6. Does the room warrant a microphone and speakers? If so, make certain they are set up, the presenter tests the microphone, and there are plenty of spare batteries for the mic.
7. If possible, have the Presentation Services Audio Visual company stay in the room for the entire presentation so they might attend to any malfunctions ASAP. Worse case, obtain the cell number of the technician and the office number for technical support if a problem arises.

People who learn English as a second language have problems mastering the tenses. While the Present Perfect tense poses challenge at a cognitive level, the Present Continuous poses challenge in restraining them from over use.

Asian learners, especially, Indian, use this tense left, right and center.

I am coming out from the shopping mall, sir, I am meeting this man who is asking for money yesterday.

It is not difficult and it does not take much time either to understand the tense, but it does take some practice, a guided practice, to master it.

The primary usage of this tense is to speak about what is happening at the time of speaking-that is the ‘now’ of the speaker.

I am reading this article.

Are you listening to me?

It is not moving, is it?

The Present Continuous is also used for speaking about an action happening these days or nowadays.

What is he doing?

He is writing a new novel.

Where is papa? What is he doing?

He is in Canberra, attending a conference.

The examples above show that the tense is used for an action that you consider temporary. It is not an action that happens every day, every time, for which we use the Simple Present.

I read books. It is my hobby and it happens every time when I have time

I am reading books. Now.

I am reading a new book by Archer. Nowadays.

Unlike native speakers, speakers of English as a second language find it difficult to understand verbs that are seldom used in the Present Continuous even for actions happening now.

Are you seeing the bus there?

Speak, I am hearing you.

I am wanting money.

Are you understanding me?

He is not having any problems.

Verbs such as see and hear are involuntary actions. You cannot stop seeing if you keep your eyes open nor can you stop sounds entering your ears that are always open. They are always open and not under your control.

The Present Continuous is used only with actions that come under your control. Similar is the case with verbs that denote a state and not action. Have denotes possession or relationship. It speaks about no action. Therefore the sentence He is not having any problems is considered non-standard.

So next time when you use the Present Continuous, pause for a while and find out if you have got that sentence correct. This advice is for learners of English as second language.